Have you verified that your DNS is as it should be? Try running dcdiag /test:dns to make sure your records are OK. If it returns errors add the verbose (/v) switch for details and write it out to a file for ease of reading.

What do your connections look like in Sites and Services? Do you have connections created? Also make sure that you can ping the DC's by name and also check that the ADDS services and netlogon services are started correctly.

Check the event viewer on the DC's "directory service", "DNS", "Replication" to get more info as to what happened and when it started. This will be a good indicator if something has changed on the DC before they stopped communicating.

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Microsoft Azure is rapidly becoming the norm in dynamic IT environments. This document describes the challenges that organizations face when protecting data in a hybrid cloud IT environment and presents a use case to demonstrate how Acronis Backup protects all data.

A bad practice commonly found during an account life cycle is to set its password to an initial, insecure password. The Password Reset Tool was developed to make the password reset process easier and more secure.

Wouldn't it be nice if objects in Active Directory automatically moved into the correct Organizational Units?
This is what AutoAD aims to do and as a plus, it automatically creates Sites, Subnets, and Organizational Units.

This tutorial will walk an individual through locating and launching the BEUtility application to properly change the service account username and\or password in situation where it may be necessary or where the password has been inadvertently change…

This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders.
Click on Start and then select Computer to view the available drives on the se…